I was changing provider in 2015 but my old provider forgot to disable this web site, so it stays on for the time being together with the new one.
The new address is
I am reviving my laser hobby... as I do feel an urge to do something practical and swing
the soldering iron once in a while, or just contemplate upon the beauty
of a beam of coherent light!
This is mainly for the fun of tinkering with electronics and building stuff, but I do a bit of holography as well, in order to have a good use of my lasers.
I also run a blog, for discussions and announcements.
Update 12-2020: investigations of the Osram PL530 530nm optically pumped semiconductor laser (OPSL), incl driver board
Below I have set up some notes about my laser-related projects; I wish them to be helpful to other laser enthusiasts, much like I appreciated detailed help from many others.